The Vespucci Kings heard about Tobius being a snake, they initially didn't believe the rumors but they turned out to be true eventually. This even go to point Ally, Tobius girlfriend who was close with the gang, she told him the gang wanted to kill him, which resulted in the gang finding out and killing her.

Vespucci Kings were out for Tobius and wanted to kill him, as well as a lot of other gangs/organizations and even other criminals as he caused a lot of conflicts and wars between gangs. He stole from the kings, he took some money and guns and fled. He has since returned to Los Santos.